microSHIFT Mountain Pull Thumb Shifter Mount Left Model=R539 Front Derailleur }RockShox Rear Shock Damper Body

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microSHIFT Mountain Pull Thumb Shifter Mount Left Model=R539 Front Derailleur }RockShox Rear Shock Damper BodymicroSHIFT Mountain Pull Thumb Shifter Mount Left. Replacement microSHIFT thumb shifter mounts allow you to replace broken units or convert microSHIFT bar end shifters to thumb lever mount for flat bar compatibility.